Patents by Inventor Atsushi Takechi

Atsushi Takechi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8853898
    Abstract: An object of the present invention is to provide an electrical rotating machine that prevents heat generated from a stator winding from being transmitted to an inverter circuit. A rotor having a field winding, and a stator having a stator winding arranged so as to surround the rotor are provided. One end of a rear bracket is connected to the stator, and arranged inside the rear bracket is a heat sink assembly including a heat sink having switching elements for controlling the field winding and the stator winding mounted thereto. The heat sink assembly is fixed to protruding portions protruding from an end surface of the rear bracket.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: October 7, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Atsushi Takechi, Masao Kikuchi, Hitoshi Isoda, Masaki Kato, Masahiko Fujita
  • Patent number: 8461733
    Abstract: A dynamoelectric machine main body that includes: a housing that is constituted by a rear bracket and a front bracket; a rotor; a stator; and a fan, and a power supply unit that is mounted integrally onto the dynamoelectric machine main body are included, the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the rear bracket has: air discharge ports that are formed on portions that are positioned radially outside the fan; and air suction ports that have openings nearer to a bottom portion than the power supply unit, and includes a partitioning member for configuring a ventilation channel that extends from the air suction ports to the air discharge ports that is disposed between the power supply unit and the fan.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: June 11, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Atsushi Takechi, Dai Nakajima, Hitoshi Isoda, Masahiko Fujita
  • Patent number: 8188626
    Abstract: There is obtained a controller-integrated electric rotating machine that is superior in terms of a cooling effect. In a controller-integrated electric rotating machine provided with a stator 3 configured with an iron core 3B and a stator winding 3A, a rotor 4 having a cooling fan 5, an inverter power circuit 20 that is a control apparatus for applying a stator current to the stator winding 3A, and a bus bar 30 that supplies the inverter power circuit 20 with electric power from a battery, the inverter power circuit 20 includes a power module 21 that has a function of switching the stator current, a heat sink 23 on which the power module 21 is mounted by the intermediary of an insulating layer, and an insulator case 25 that incorporates the power module 21 and holds respective terminals of the power module 21; and the bus bar 30 is connected with terminals 22a, 22b, 22c, and 22d of the inverter power circuit 20 and has a cooling fin 30a.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: May 29, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hitoshi Isoda, Masahiko Fujita, Atsushi Takechi
  • Publication number: 20110193432
    Abstract: A dynamoelectric machine main body that includes: a housing that is constituted by a rear bracket and a front bracket; a rotor; a stator; and a fan, and a power supply unit that is mounted integrally onto the dynamoelectric machine main body are included, the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the rear bracket has: air discharge ports that are formed on portions that are positioned radially outside the fan; and air suction ports that have openings nearer to a bottom portion than the power supply unit, and includes a partitioning member for configuring a ventilation channel that extends from the air suction ports to the air discharge ports that is disposed between the power supply unit and the fan.
    Type: Application
    Filed: July 29, 2010
    Publication date: August 11, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Atsushi TAKECHI, Dai NAKAJIMA, Hitoshi ISODA, Masahiko FUJITA
  • Publication number: 20110101804
    Abstract: There is obtained a controller-integrated electric rotating machine that is superior in terms of a cooling effect. In a controller-integrated electric rotating machine provided with a stator 3 configured with an iron core 3B and a stator winding 3A, a rotor 4 having a cooling fan 5, an inverter power circuit 20 that is a control apparatus for applying a stator current to the stator winding 3A, and a bus bar 30 that supplies the inverter power circuit 20 with electric power from a battery, the inverter power circuit 20 includes a power module 21 that has a function of switching the stator current, a heat sink 23 on which the power module 21 is mounted by the intermediary of an insulating layer, and an insulator case 25 that incorporates the power module 21 and holds respective terminals of the power module 21; and the bus bar 30 is connected with terminals 22a, 22b, 22c, and 22d of the inverter power circuit 20 and has a cooling fin 30a.
    Type: Application
    Filed: March 11, 2010
    Publication date: May 5, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hitoshi ISODA, Masahiko FUJITA, Atsushi TAKECHI
  • Publication number: 20100289352
    Abstract: An object of the present invention is to provide an electrical rotating machine that prevents heat generated from a stator winding from being transmitted to an inverter circuit. A rotor having a field winding, and a stator having a stator winding arranged so as to surround the rotor are provided. One end of a rear bracket is connected to the stator, and arranged inside the rear bracket is a heat sink assembly including a heat sink having switching elements for controlling the field winding and the stator winding mounted thereto. The heat sink assembly is fixed to protruding portions protruding from an end surface of the rear bracket.
    Type: Application
    Filed: October 28, 2009
    Publication date: November 18, 2010
    Applicant: Mitsubishi Electric Corporation
    Inventors: Atsushi TAKECHI, Masao KIKUCHI, Hitoshi ISODA, Masaki KATO, Masahiko FUJITA